Billboards is a large outdoor advertising structure (a billing board), typically found in high-traffic areas such as alongside busy roads. Billboards present large advertisements to passing pedestrians and drivers. Typically brands use billboards to build their brands or to push for their new products.
In billboards lighting, there are two elements are important to catch people’s attention.
1)Lighting intensity;
2)The uniformity of lighting.
The lighting intensity
There is no standard about billboard lighting, but it can easily catch attention when the environment lighting vs accent lighting are from 10:1 to 30:1.
1)When the billboard locate in the downtown where the environment lighting intensity is high, then it should increase the power of flood lights, so that the area is much brighter than others.
2)But when the billing board locate in suburban district, then it can use less power flood light to reach the same contrasity.
The uniformity of lighting
The lighting intensity is mainly for appealing people , while the uniformity is for please people. People can read the content easily by proper lighting uniformity.
In the picture above, you can not read all contents, since the uniformity is not good and the lighting intensity is too much to see the billboard.
We do the same lighting calculation by dialux evo, the uniformity is only 0.06 by 100w flood light which is 4000K 100 degree beam.
I think the wide angle flood light can not cover 3 or 4 meter high billboard, the smooth lighting distance is about 1.45 meter from the flood light. Even though you can arrange one group lights on top and the others on the bottom. The uniformity is still not good.
To reach high lighting uniformity, the easy way is just change the beam angle from 100 degree to 60 degree. Like the pictures below:
In reality,it looks like the picture below with good lighting intensity for people to read the contents and also feel confortable with high uniformity.
Post time: Dec-12-2022